Glutaraldehyde-DNPH, 100 µg/ml, Acetonitrile, 1m

3,5,6-trichloro-2-pyridinol(4,5,6-13C3, 99%) cp 97%, 100µg/ml in Acetonitrile, 1,2ml

n-Pentane

1-Chloro-2,4-dinitrobenzene, 1000µg/ml in MeOH, 1ml